The AB HD15 / 6-Pin manual keyboard-to-monitor switch box allows you to control up to 4 computers with one monitor and keyboard. No keyboard lockups when you're switching since they don't take power from keyboard ports and the 6-pin din connection will work with just about any MiniDin6, PS2-style keyboard. The HD15 connection can connect to virtually any VGA/SVGA monitors. Type: 4 to 1